I) Mikhail Gorbachev - C) Introduced reforms

Mikhail Gorbachev was the General Secretary of the Communist Party of the Soviet Union in 1985. He was the one who sought to initiate reforms in the Soviet Union system and considered them necessary to keep the Soviet Union at par with the West.

II. Shock therapy - D) Economic model

Shock Therapy was a process of transition from an authoritarian socialist system to a democratic capitalist system. This transition influenced by the World Bank and the IMF came to be known as Shock Therapy.

III. Russia - A) successor of USSR

After the disintegration of the Soviet Union, Russia was internationally recognised as its successor out of all the member countries. It inherited soviet’s seat in the UN Security Council and accepted all its international treaties and agreements.

IV. Boris Yeltsin - E) President of Russia

Boris Yeltsin was the first elected President of Russia. (1991-1999)

V. Warsaw - B) Military pact

The east European countries liberated by USSR after the Second World War came under the influence of UUSR and were politically and economically under the USSR. This group was called the Socialist bloc and was held together by a military pact called the Warsaw pact.